﻿using Bing.Data.Sql.Builders;

// ReSharper disable once CheckNamespace
namespace Bing.Data.Sql;

/// <summary>
/// Join子句扩展
/// </summary>
public static partial class Extensions
{
    /// <summary>
    /// 内连接
    /// </summary>
    /// <typeparam name="T">源类型</typeparam>
    /// <param name="source">源</param>
    /// <param name="table">表名</param>
    /// <param name="alias">别名</param>
    public static T Join<T>(this T source, string table, string alias = null) where T : IJoin
    {
        if (source == null)
            throw new ArgumentNullException(nameof(source));
        if (source is ISqlPartAccessor accessor)
            accessor.JoinClause.Join(table, alias);
        return source;
    }

    /// <summary>
    /// 内连接
    /// </summary>
    /// <typeparam name="T">源类型</typeparam>
    /// <param name="source">源</param>
    /// <param name="builder">Sql生成器</param>
    /// <param name="alias">别名</param>
    public static T Join<T>(this T source, ISqlBuilder builder, string alias) where T : IJoin
    {
        if (source == null)
            throw new ArgumentNullException(nameof(source));
        if (source is ISqlPartAccessor accessor)
            accessor.JoinClause.Join(builder, alias);
        return source;
    }

    /// <summary>
    /// 内连接
    /// </summary>
    /// <typeparam name="T">源类型</typeparam>
    /// <param name="source">源</param>
    /// <param name="action">子查询操作</param>
    /// <param name="alias">别名</param>
    public static T Join<T>(this T source, Action<ISqlBuilder> action, string alias) where T : IJoin
    {
        if (source == null)
            throw new ArgumentNullException(nameof(source));
        if (source is ISqlPartAccessor accessor)
            accessor.JoinClause.Join(action, alias);
        return source;
    }

    /// <summary>
    /// 添加到内连接子句
    /// </summary>
    /// <typeparam name="T">源类型</typeparam>
    /// <param name="source">源</param>
    /// <param name="sql">Sql语句。说明：将会原样添加到Sql中，不会进行任何处理</param>
    public static T AppendJoin<T>(this T source, string sql) where T : IJoin
    {
        if (source == null)
            throw new ArgumentNullException(nameof(source));
        if (source is ISqlPartAccessor accessor)
            accessor.JoinClause.AppendJoin(sql);
        return source;
    }

    /// <summary>
    /// 添加到内连接子句
    /// </summary>
    /// <typeparam name="T">源类型</typeparam>
    /// <param name="source">源</param>
    /// <param name="sql">Sql语句。说明：将会原样添加到Sql中，不会进行任何处理</param>
    /// <param name="condition">该值为true时添加Sql，否则忽略</param>
    public static T AppendJoin<T>(this T source, string sql, bool condition) where T : IJoin => condition ? AppendJoin(source, sql) : source;

    /// <summary>
    /// 左外连接
    /// </summary>
    /// <typeparam name="T">源类型</typeparam>
    /// <param name="source">源</param>
    /// <param name="table">表名</param>
    /// <param name="alias">别名</param>
    public static T LeftJoin<T>(this T source, string table, string alias = null) where T : IJoin
    {
        if (source == null)
            throw new ArgumentNullException(nameof(source));
        if (source is ISqlPartAccessor accessor)
            accessor.JoinClause.LeftJoin(table, alias);
        return source;
    }

    /// <summary>
    /// 左外连接
    /// </summary>
    /// <typeparam name="T">源类型</typeparam>
    /// <param name="source">源</param>
    /// <param name="builder">Sql生成器</param>
    /// <param name="alias">别名</param>
    public static T LeftJoin<T>(this T source, ISqlBuilder builder, string alias) where T : IJoin
    {
        if (source == null)
            throw new ArgumentNullException(nameof(source));
        if (source is ISqlPartAccessor accessor)
            accessor.JoinClause.LeftJoin(builder, alias);
        return source;
    }

    /// <summary>
    /// 左外连接
    /// </summary>
    /// <typeparam name="T">源类型</typeparam>
    /// <param name="source">源</param>
    /// <param name="action">子查询操作</param>
    /// <param name="alias">别名</param>
    public static T LeftJoin<T>(this T source, Action<ISqlBuilder> action, string alias) where T : IJoin
    {
        if (source == null)
            throw new ArgumentNullException(nameof(source));
        if (source is ISqlPartAccessor accessor)
            accessor.JoinClause.LeftJoin(action, alias);
        return source;
    }

    /// <summary>
    /// 添加到左外连接子句
    /// </summary>
    /// <typeparam name="T">源类型</typeparam>
    /// <param name="source">源</param>
    /// <param name="sql">Sql语句。说明：将会原样添加到Sql中，不会进行任何处理</param>
    public static T AppendLeftJoin<T>(this T source, string sql) where T : IJoin
    {
        if (source == null)
            throw new ArgumentNullException(nameof(source));
        if (source is ISqlPartAccessor accessor)
            accessor.JoinClause.AppendLeftJoin(sql);
        return source;
    }

    /// <summary>
    /// 添加到左外连接子句
    /// </summary>
    /// <typeparam name="T">源类型</typeparam>
    /// <param name="source">源</param>
    /// <param name="sql">Sql语句。说明：将会原样添加到Sql中，不会进行任何处理</param>
    /// <param name="condition">该值为true时添加Sql，否则忽略</param>
    public static T AppendLeftJoin<T>(this T source, string sql, bool condition) where T : IJoin => condition ? AppendLeftJoin(source, sql) : source;

    /// <summary>
    /// 右外连接
    /// </summary>
    /// <typeparam name="T">源类型</typeparam>
    /// <param name="source">源</param>
    /// <param name="table">表名</param>
    /// <param name="alias">别名</param>
    public static T RightJoin<T>(this T source, string table, string alias = null) where T : IJoin
    {
        if (source == null)
            throw new ArgumentNullException(nameof(source));
        if (source is ISqlPartAccessor accessor)
            accessor.JoinClause.RightJoin(table, alias);
        return source;
    }

    /// <summary>
    /// 右外连接
    /// </summary>
    /// <typeparam name="T">源类型</typeparam>
    /// <param name="source">源</param>
    /// <param name="builder">Sql生成器</param>
    /// <param name="alias">别名</param>
    public static T RightJoin<T>(this T source, ISqlBuilder builder, string alias) where T : IJoin
    {
        if (source == null)
            throw new ArgumentNullException(nameof(source));
        if (source is ISqlPartAccessor accessor)
            accessor.JoinClause.RightJoin(builder, alias);
        return source;
    }

    /// <summary>
    /// 右外连接
    /// </summary>
    /// <typeparam name="T">源类型</typeparam>
    /// <param name="source">源</param>
    /// <param name="action">子查询操作</param>
    /// <param name="alias">别名</param>
    public static T RightJoin<T>(this T source, Action<ISqlBuilder> action, string alias) where T : IJoin
    {
        if (source == null)
            throw new ArgumentNullException(nameof(source));
        if (source is ISqlPartAccessor accessor)
            accessor.JoinClause.RightJoin(action, alias);
        return source;
    }

    /// <summary>
    /// 添加到右外连接子句
    /// </summary>
    /// <typeparam name="T">源类型</typeparam>
    /// <param name="source">源</param>
    /// <param name="sql">Sql语句。说明：将会原样添加到Sql中，不会进行任何处理</param>
    public static T AppendRightJoin<T>(this T source, string sql) where T : IJoin
    {
        if (source == null)
            throw new ArgumentNullException(nameof(source));
        if (source is ISqlPartAccessor accessor)
            accessor.JoinClause.AppendRightJoin(sql);
        return source;
    }

    /// <summary>
    /// 添加到右外连接子句
    /// </summary>
    /// <typeparam name="T">源类型</typeparam>
    /// <param name="source">源</param>
    /// <param name="sql">Sql语句。说明：将会原样添加到Sql中，不会进行任何处理</param>
    /// <param name="condition">该值为true时添加Sql，否则忽略</param>
    public static T AppendRightJoin<T>(this T source, string sql, bool condition) where T : IJoin => condition ? AppendRightJoin(source, sql) : source;

    /// <summary>
    /// 设置连接条件
    /// </summary>
    /// <typeparam name="T">源类型</typeparam>
    /// <param name="source">源</param>
    /// <param name="condition">连接条件</param>
    public static T On<T>(this T source, ICondition condition) where T : IJoin
    {
        if (source == null)
            throw new ArgumentNullException(nameof(source));
        if (source is ISqlPartAccessor accessor)
            accessor.JoinClause.On(condition);
        return source;
    }

    /// <summary>
    /// 设置连接条件
    /// </summary>
    /// <typeparam name="T">源类型</typeparam>
    /// <param name="source">源</param>
    /// <param name="left">左表列名</param>
    /// <param name="value">值</param>
    /// <param name="operator">条件运算符</param>
    public static T On<T>(this T source, string left, object value, Operator @operator = Operator.Equal)
        where T : IJoin
    {
        if (source == null)
            throw new ArgumentNullException(nameof(source));
        if (source is ISqlPartAccessor accessor)
            accessor.JoinClause.On(left, value, @operator);
        return source;
    }

    /// <summary>
    /// 添加到On子句
    /// </summary>
    /// <typeparam name="T">源类型</typeparam>
    /// <param name="source">源</param>
    /// <param name="sql">Sql语句</param>
    public static T AppendOn<T>(this T source, string sql) where T : IJoin
    {
        if (source == null)
            throw new ArgumentNullException(nameof(source));
        if (source is ISqlPartAccessor accessor)
            accessor.JoinClause.AppendOn(sql);
        return source;
    }
}
